二相蒸氣腔體散熱器之實驗分析

Experimental Analysis of the Two-phase Vapor Chamber Heat Sink

陳慶峰(CHING-FENG CHIN)

指導教授 ： 郭鴻森

大同大學/工程學院/機械工程學系所/碩士(2006年)

摘要

隨著半導體製程技術的精進與人們對電子元件性能的期待，使得電子元件積極化的程度與構裝單位體積或面積的發熱量都越來越高，
使得近年來發展出許多不同形式的散熱裝置。本文主要運用熱管以相變化高潛熱釋放的熱傳特性，利用熱虹吸式熱管原理對傳統式鋁擠型散熱器加以改良成Vapor Chamber。
本文主要針對Vapor Chamber的冷凝端和蒸發端之表面處理作性能上的改善，冷凝端所用的表面有，原始散熱器表面、鍍鉻、鍍鎳、化學鎳、PTFE+奈米鑽石混合材料，其中以PTFE+奈米鑽石為所有表面裡使Vapor Chamber性能達到最好的。蒸發端主要以平滑面和V型溝槽做比較，V型溝槽在最佳冷凝端PTFE+奈米鑽石表面中，發熱率在20W低熱傳率中V型溝槽表面對平滑面有25.7%的改善，而80W高熱傳率有18.42%的改善，且在高發熱率下PTFE+奈米鑽石之Vapor Chamber熱阻已低於本身未裝chamber之熱阻。

關鍵字

熱虹吸式熱管

並列摘要

With the remarkable advancement of semiconductor production process and people's aspiring expectation to the performance of electronic components, the said situations make higher and higher active degrees on electronic components and the more and more heat emission of per unit area and volume for the said component assembly.
The aforesaid mention motivates people to develop numerous types of heat sink devices. Within this article, we mainly adopt the heat transmission characteristics for high latent heat of phase alternation driven by pipe lines and further use the siphon principle to make further improvement on traditional heat sink devices and change them into vapor chambers.
Within this article, we mainly focus on the performance improvement for the surface processing characteristics of condenser sections and evaporator sections on vapor chambers. The surfaces used by the condenser sections include original heat sink device surface, Cr coating surface, Ni coating surface, chemical Ni surface and the material mixture of PTFE+Nano-diamond. Among them, the surface of PTFE+ Nano-diamond brings about the most excellent vapor chamber performance among all types of surfaces. The evaporator sections are compared mainly based on the smooth surface and V-shape grooved surface. The V-shape grooved surfaces on the best condensing section with PTFE+ Nano-diamond mixture emit the heat rate of 20W. Under low heat transmission rate, V-shape grooved surfaces bring about better performance than that of smooth surfaces by 25.7% increment. Under the high heat transmission rate of 80W, the high heat transmission rate increases by 18.42%. Also, under high heat transmission rate, the thermal resistance of vapor chambers with PTFE+Nano-diamond material mixture has been less than that of those without chamber installed.

並列關鍵字

Vapor Chamber

參考文獻

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